Armature for dynamo-electric machines



(No Model.) '2 Shee'ts-Sheet 1. W. P. FREEMAN.

' ARMATURE FOR DYNAMO ELEGTRIO MACHINES.

No. 281,049. Patented July 10, 1883.

WITNESSES! I INVENTOR- 31 Q m G. 3

(No Model.) 2 Sheets She et 2. W. P. FREEMAN.

ARMATURE FOR DYNAMO ELECTRIC MACHINES.

No. 281,049. Patented July 10. 1883.

WITNESS-E5: JNVENTOR UNITED STATES? PATENT OFFICE.

WARREN P. FREEMAN, OF NEW YORK, N. Y., ASSIGNOR TO IVILLIAM F. JOBBINS. OF EAST ORANGE, NEW JERSEY.

ARMATURE FOR DYNAMO-ELECTRIC MACHINES.

SPECIFICATION forming part of Letters Patent No. 281,049, dated July 10, 1883.

' Application filed Octobcr14,1882. (No model.)

To aZZ whom it may concern.- stead of winding each coil into two spaces dia- Be it known that I, WVARREN 1?. FREEMAN, metrically opposite each other, I wind each 50 a citizen of the United States, and a resident coil in the two spaces which are next adjacent of New York city, New York, have invented to two diametrically-opposite poles on the certain Improvements in Armatures for Dysame side of a diametrical line through said namo-Electric Machines or Electric Motors, of poles, as indicated in Figs. 2, 3, and 4, so that which the following is a specification. the coils appear in pairs, the two coils of each 55 My invention relates to that class of armapair appearing in these diagrams uncrossed tures for dynamo-electric machines or electric at the ends of the cylinder and lying side by motors in which the armature-body is in the side, with the dividing-line passing through form of a cylinder or drum mounted on an the intermediate and diametrically-opposite axis, and having its inducing-coils wound poles and through the center of the axis. Thus 60 longitudinally around the outside of the cylin Fig. 2 the first coil is wound in the spaces inder; and my invention consists of an im- 1 1*, the second in 2 2*, the third in 3 3*, and

proved method of winding these coils. the fourth in 4 4*. This, as indicated, will In the accompanying drawings, Figure 1 is permit all the terminals to be brought out in a diagram of the end of an armature without proper order. 6 5 its axis, showing a common method of wind- Although I have shown thetwo coils of each ing the coils of an armature; Fig. 2, a similar pair in the diagrams as absolutely parallel diagram of my improved method; Fig. 3, a with each other at the ends of the cylinder, in perspective diagram of an armature wound in practice convenience in'carrying the wires accordance with my invention; and Fig. 4, around the axle of the armature at each end of 70 another perspective diagram, to illustrate a the drum or cylinder will prevent this paralmethod of connecting up the terminals. lelism; but the essential feature of my inven- 5 I11 g and-3 I v Shown the cyli ltion consists in winding the drum with each der as provided with eight spaces, into which inducing-coil in spaces on the same side of are wound four coils, while in Fig. 4there are and next adjacent to a line drawn through di 75 sixteen spaces and eight coils; but the number ametrically-opposite poles. may be varied indefinitely, as may be found In Fig. 3 I have shown the outside termidesirable. nals as brought out at the same end of the In the usual method of winding, each coil armature as the inside terminals; but they may is wound into two diametrically- Opposite be brought out at opposite ends, if preferred. 80 spacesas, for instance, the spaces 1 1*, or 2 These terminals may be connected up in any 2= so that all the coils cross each other at the manner which may be found convenient, either 3 5 ends of the cylinder, as shown in Fig. 1. The on a continuous-current dynamo-electric maresult of this arrangement is that at two points chine, or an alternating-current machine, or in the cylinder the terminals do not come out for an electric motor; but I prefer to connect 8 5 into the proper positions. For instance, in up the terminals in the manner described and Fig. 1, supposing the dots to represent the claimed in the Patent No. 264,229, granted to terminal wires, at 1 is an inside terminal wire George \V. Beardslee, September 12, 1882, and at 1* an outside terminal; at 2 is an outthe eight inside terminals, for instance, as

, side and at 2* an inside terminal, and so 011. shown in Fig. 4, being connected up in alter- 0 This will leave at the two adjoining spaces 1 nate sets or order to rings M N at one end of and 4* two inside terminals, and at 4 and 1* the armature, while the outer terminals at the two outside terminals, so that the magnetic other end of the armature are connected up to effect on the intermediate poles, p p, will be the segments of four commutator-wheels, as neutral. To obviate this difficulty and bring fully described in said patent. The particu- 5 the terminals out in proper relative order, inlar manner of connecting up the terminals,

however, forms no part of my present inven- In testimony whereof Ihave signed my name tion, as it may be Varied to suit convenience. to this specification. in the presence of two I claim as my inventionsubscribing witnesses. The combination of the body of a cylinder- 5 armature with inducing-coils wound 1ongitu- \VARREN P. FREEMAN.

dinally thereon, each coil being wound in spaces on the same side of and next adjacent \Vitnesses:

to a line drawn through two diainetrically-op- GEO. WV. ()LLIFF,

positc poles of the cylinder, substantially as XVALTER K. FREEMAN. 10 described. 

